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Description: | An incomplete Post Medieval copper alloy pocket sun dial dated to the 17th or early 18th century. The dial is incomplete and the gnomon has broken away - although retained by finder. The dial has a circular frame, with three internal projecting tabs. One of these has a small riveted pierced loop on which the folding triangular fin - the gnomon would have fitted the other two tabs probably tethered each side of the gnomon. Inscribed around the edge of the frame are the numbers in Roman numerals are 4 (IIII) -12 and 1-8 which represent the hours of daylight for the northern latitude. These are sub-divided into quarter hours by a calibrated ring that has four divisions each hour. When raised the gnomon would have cast a shadow to enable the user to tell the time. The gnomon is decorated with a incised design along one edge, the lower part is cut away with a series of notches and three small conjoined arrows point to the centre of the central notch. The case to house this dial is missing. There are no visible maker's marks. Three similar pocket sun dials are recorded on the PAS database from City of London, (LON-84D845), Sleaford, Lincolnshire (LIN-2D8F83) and Raunds Northamptonshire (NARC140). The Northamptonshire example is closest to this exampleDimensions: The ring has a diameter of 52.8mm; thickness of frame: 1.3mm; thickness of the frame and rivet 4.9mm. The gnomon measures 29.6mm length, 17.8mm width and is 1.1mm thick. The dial and gnomon weighs 7.94 grams
Original Image | Publisher: | http://finds.org.uk | Source: | Portable Antiquities | Identifier: | http://finds.org.uk/database/artefacts/r... | Go to resource |
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